Borusa

Borusa is a fictional character in the British science fiction television series Doctor Who. He was a Time Lord, and a former teacher of the Doctor. Borusa appeared in four serials throughout the course of Doctor Who: The Deadly Assassin, The Invasion of Time, Arc of Infinity and The Five Doctors. Each time, Borusa was portrayed by a different actor, it being implied that the character had regenerated in the time between these serials and thus his appearance and personality were different in each story. It is said that Borusa was one of the Doctor's former trainers when the Doctor was young. When the character was first introduced in The Deadly Assassin, he occupied the post of Cardinal in the High Council, and was portrayed as a good...